Here is an update from the Annapolis Public Works Administration concerning some transportation projects in the city:

* Forest Drive -- From Chinquapin Round Road to Solomons Island Road (Route 2). Ongoing work includes storm drain installation, road widening, curb installation, new sidewalks, roadway resurfacing, traffic signal adjustment and new signs and pavement markers. The project is scheduled for completion by the end of the month.

* Brown Street -- This road connects Spa Road and West Street and is temporarily one-way heading toward West Street to accommodate construction of the Severn Bank Building at Westgate Circle. The project is scheduled to be completed by spring.

* Acton's Landing -- Construction of a waterfront park has led to several closures involving South Street and the foot of Shaw Street, and some sidewalk segments along Franklin, Cathedral and South streets. Construction should be completed by March.

* House of Delegates building -- Construction of an addition has led to changes in traffic patterns on Bladen Street. The project is scheduled for completion at the end of this year.

Put On That Front Plate

Dear Dr. Gridlock:

I live in Maryland and bought a used 2005 Buick Century here. The dealership gave me only a rear temporary tag and is processing my new tag request.

There is no place to put a front plate on my car. There is no frame and, short of getting out a drill and bending the plate (a little), I don't see how I can get one on.

I guess I'll have to wait and see how many plates I receive. Maybe car manufacturers are making models for specific regions. My car was originally from Florida, where they need only one plate.

Patrice Ryan

Great Mills

It's your responsibility to make sure your Maryland-registered vehicle has a front license plate. I would make the dealership install the front and rear frames, with temporary tags, before I left the lot. I'd write it into the sales contract.

Once you leave the dealer's lot with only a rear tag, you are in violation of Maryland law and can be cited.

Now that you're in this pickle, head immediately to your mechanic and ask him to install a front plate. It doesn't have to be positioned dead center, but it does have to be on the front.

Why Two Plates?

Dear Dr. Gridlock:

I truly cannot understand why some drivers are getting all heated up about missing front license plates on Maryland vehicles.

What purpose, specifically, does a front plate serve? If a car is speeding toward you, perhaps fleeing a crime scene, how would one be able to memorize the front plate? All I would be able to tell is that, yes, that car definitely had a rectangular piece of metal affixed to its front bumper, and it was white in color, with some numbers, or maybe some letters, or perhaps both!

It is far easier to memorize the rear plate of a car as it is traveling away from you.

John M.B. Essex

University Park

Law enforcement officials in Maryland argue that they want a front plate to more easily identify vehicles. Most states require two plates for that reason.

The Incognito I-595

Dear Dr. Gridlock:

How about putting some heat on the Maryland State Highway Administration to properly sign the stretch of U.S. Route 50 from the Capital Beltway to Annapolis?

This highway was raised to interstate standards in 1995 and is officially designated Interstate 595 but has never been signed as such.

The official explanation is that people are so used to calling it Route 50 or the John Hanson Highway that it would be too confusing to post it as an interstate.

Most places boast of being accessible by interstate highway; here we are believed too stupid to accept it. Or is something else going on?

Robert D. Hershey

Chevy Chase

U.S. Route 50 is a continuous road from Ocean City, Md., to Sacramento, Calif. It cuts right across our metropolitan area. Yes, a 20-mile segment from the Capital Beltway to Annapolis was upgraded to interstate highway standards and was to be known as Interstate 595. But the Maryland State Highway Administration convinced the feds that the interstate designation would be more confusing than simply leaving it as Route 50. I agree with the state.

Otherwise, you might come up with the same kind of crazy interstate sign designations as those on the inner (clockwise) loop of the Beltway, approaching the Springfield interchange. There, signs say that in order to get onto the Beltway (which you are already on) you have to exit the Beltway, when, in fact, all you have to do is continue straight ahead.

If you like interstate designations, try Virginia's Tidewater area, which has multiple interstate signs on its road system, including roads that morph into various other interstate routes with little warning. It's enough to bring back horse travel.

Taxi Fares: Meter vs. Zone

Dear Dr. Gridlock:

I am writing in response to the Dr. Gridlock Live Online discussion on meter or zone fares for District taxis [www.washingtonpost.com, Oct. 24].

I ride cabs from Van Ness Street to the Watergate complex a couple of times a month. I realize it is up to me to know my fare, so I went to the city Web site www.dctaxi.dc.gov. On the home page, under "Information," there's a "Taxicab Zone Maps" link, which takes you to a map, a chart of zone charges and a fare calculator.

The zone system charges you according to the number of zones you travel through, from pickup point to drop off.

It does not charge you for time spent in traffic. I ride from the exact same zone to the exact same zone every time I take this ride, and there can be only one fare.

When I got hassled by a cabbie, I pulled out the fare calculator printouts, and there was my fare in black and white from the D.C. Taxicab Commission. Argument over.

However, this Web site and its fare calculator are not well known. It's like Metro putting the location of its system maps in tiny type on its home page. Why are these important public services not promoted and displayed prominently?

I believe the zone system was designed to keep trips around downtown relatively inexpensive. If distances traveled were among the fare determinants, riders would be at the mercy of traffic and the cabbie's chosen route.

As a taxpayer, because I'm paying the fares of federal government officials (through their expense accounts) when they catch a cab for lunch or to head over to the State Department, I want the fares as low as possible. I know how much it costs to get from my house to work. I don't want it to change depending on traffic or what route is chosen.

I want the zone system to stay. I'm not convinced that it's so broken it needs fixing.

Sharon Buck

Washington

Thanks for the information. I suspect you have made yourself among the most knowledgeable of D.C. taxi customers.

For visitors or suburbanites, however, the zone system can be perplexing because the customer often doesn't know what the fare should be.

I'm glad the zone system works for you and keeps the fares down. I prefer a meter. We then know the exact fare. No argument there, either.

What do you folks think: meters or zones for D.C. taxi fares?

Coast to Save

Dear Dr. Gridlock:

Though gasoline prices are coming down, I have a suggestion that should increase auto mileage noticeably, especially in town: Coast whenever you can.

Here are some procedures for coasting:

1) Prepare by making sure your tires are properly inflated. That will decrease rolling resistance and increase tire life. The recommended pressures are usually listed on a tag near the driver's door.

2) Start out sensibly. Don't accelerate quickly to the appropriate speed -- especially away from stoplights. Just push the pedal to where it needs to be for the speed limit and let the car pick up at its own pace. If anyone honks, wave cheerfully at them, secure in the knowledge that you are saving money.

3) As soon as you sight a red stoplight, coast into it so little braking is needed to come to a full stop.

4) When you come to a downgrade, don't motor down the slope. Let up on the gas and let gravity do the work.

There are lots of hills over here in Arlington where you can coast for up to half a mile. And you will be surprised by how far you can coast down even mild grades. Cars made in the last several years do much, much better than those of previous automotive eras.

Practice these techniques until they become instinctive. Remember that a 10 percent increase in your mileage -- say from 20 to 22 mpg -- drops the effective price of a $3 gallon to $2.70. And I can achieve that increment -- not on every tank, but the majority of them -- with my 3,400-pound convertible.

Alan Bosch

Arlington

Thanks for the tips. We could use them in this time of high gasoline prices.

However, I don't know about you, but if I try to drive at or under the speed limit on most any street, it's just a matter of seconds before someone is tailgating me. That leaves me with three bad choices: (a) put up with that dangerous practice, (b) speed up or (3) pull over and let the tailgater pass.

I wonder how one employs your tips and deals with tailgaters.

Safer in Silver Spring?

Dear Dr. Gridlock:

May I add a word to the comments you have received regarding the bigoted, ignorant remarks made by the Silver Spring man regarding the safety -- or lack thereof -- of living in Prince George's County [Dr. Gridlock, Sept. 29]?

It occurs to me he might want to move from Silver Spring as well, because he actually lives a lot closer than I do to areas where most of the crimes occur.

Given what has gone on in Silver Spring of late, I wonder if he has put bars on his windows yet?

Jean Winters

Fort Washington

Driving Schools

Dear Dr. Gridlock:

What is the name of the driving school you have recommended for teenagers? It was a school that taught defensive driving skills: skids, driving in bad weather, etc.

Caroline Enterline

Great Falls

Readers recommend Car Guys Inc. of Rockville (800-800 GUYS) or BSR Inc. of Summit Point, W.Va., just over the Loudoun County line (304-725-6512). Also Driver's Edge (702-896-6482) of Las Vegas has drawn many favorable reviews, but it comes to our area only once a year or so. It holds clinics at the FedEx Field parking lots.

All three schools offer one-day courses. The first two cost between $200 and $300, and Driver's Edge is free.

I commend you for looking into these courses. They can only help our young drivers.

Transportation researcher Diane Mattingly contributed to this column.

Dr. Gridlock appears Thursday in The Extra and Sunday in the Metro section. You can write to Dr. Gridlock at 1150 15th St. NW, Washington, D.C. 20071. He prefers to receive e-mail, at drgridlock@washpost.com, or faxes, at 703-352-3908. Include your full name, town, county and day and evening telephone numbers.